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. Author manuscript; available in PMC: 2016 Jan 31.
Published in final edited form as: Magn Reson Med. 2014 Mar 11;73(2):536–543. doi: 10.1002/mrm.25146

Figure 5.

Figure 5

Effect of flip angle on functional signal in STFR. (a) Correlation map obtained with STFR fMRI, using flip angles 16° and 8°. Threshold and cluster size are 0.22/12 for both flip angle acquisitions. (b) ROI used to calculate the mean time course for each flip angle, which includes pixels showing activation in both flip angle acquisitions. (c,d) One cycle of mean time course within ROI. 16° flip angle produces higher absolute and percent functional signal change compared to 8° flip angle, as predicted in simulation.